The Super Aguri team have withdrawn from the Formula One World Championship because of a lack of funding.

The Japanese team have wound up their racing activities with immediate effect and will not compete at this weekend's Turkish Grand Prix.

Super Aguri have been struggling for survival since the collapse of a takeover deal by the Dubai-based Magma Group in April.

Team founder Aguri Suzuki, who broke the news in Japan, said: "Regretfully I must inform you that the team will be ceasing racing activities.